left semicircle

基本解释

• [交通運輸工程]左半圓

英汉例句

雙語例句

• Observation eyepiece consists of concave mirror and a separate gate is formed, in the eyepiece can be seen at the same time the two semicircle color, its left for the sample color.
  觀察目鏡由凹鏡和分隔柵組成，在目鏡中可同時看到二個半圓色，其左邊的爲試樣顔色。
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专业释义

交通運輸工程

• 左半圓